/*
 * Copyright 1999-2017 Alibaba Group Holding Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package studio.raptor.sqlparser.ast.statement;

import java.util.ArrayList;
import java.util.List;
import studio.raptor.sqlparser.ast.SQLExpr;
import studio.raptor.sqlparser.ast.SQLObjectImpl;
import studio.raptor.sqlparser.ast.SQLStatement;
import studio.raptor.sqlparser.ast.SQLStatementImpl;
import studio.raptor.sqlparser.visitor.SQLASTVisitor;

public class SQLIfStatement extends SQLStatementImpl {

  private SQLExpr condition;
  private List<SQLStatement> statements = new ArrayList<SQLStatement>();
  private List<ElseIf> elseIfList = new ArrayList<ElseIf>();
  private Else elseItem;

  @Override
  public void accept0(SQLASTVisitor visitor) {
    if (visitor.visit(this)) {
      acceptChild(visitor, condition);
      acceptChild(visitor, statements);
      acceptChild(visitor, elseIfList);
      acceptChild(visitor, elseItem);
    }
    visitor.endVisit(this);
  }

  public SQLExpr getCondition() {
    return condition;
  }

  public void setCondition(SQLExpr condition) {
    this.condition = condition;
  }

  public List<SQLStatement> getStatements() {
    return statements;
  }

  public void setStatements(List<SQLStatement> statements) {
    this.statements = statements;
  }

  public List<ElseIf> getElseIfList() {
    return elseIfList;
  }


  public void setElseIfList(List<ElseIf> elseIfList) {
    this.elseIfList = elseIfList;
  }

  public Else getElseItem() {
    return elseItem;
  }

  public void setElseItem(Else elseItem) {
    this.elseItem = elseItem;
  }

  public static class ElseIf extends SQLObjectImpl {

    private SQLExpr condition;
    private List<SQLStatement> statements = new ArrayList<SQLStatement>();

    @Override
    public void accept0(SQLASTVisitor visitor) {
      if (visitor.visit(this)) {
        acceptChild(visitor, condition);
        acceptChild(visitor, statements);
      }
      visitor.endVisit(this);
    }

    public List<SQLStatement> getStatements() {
      return statements;
    }

    public void setStatements(List<SQLStatement> statements) {
      this.statements = statements;
    }

    public SQLExpr getCondition() {
      return condition;
    }

    public void setCondition(SQLExpr condition) {
      if (condition != null) {
        condition.setParent(this);
      }
      this.condition = condition;
    }
  }

  public static class Else extends SQLObjectImpl {

    private List<SQLStatement> statements = new ArrayList<SQLStatement>();

    @Override
    public void accept0(SQLASTVisitor visitor) {
      if (visitor.visit(this)) {
        acceptChild(visitor, statements);
      }
      visitor.endVisit(this);
    }

    public List<SQLStatement> getStatements() {
      return statements;
    }

    public void setStatements(List<SQLStatement> statements) {
      this.statements = statements;
    }

  }
}
